On the Metal Abundance of Giants in the Draco Dwarf Galaxy — Preliminary Results of a Spectroscopic Survey

Abstract

Spectrophotometry observations (resolution 8A) have been obtained for nine Draco giants with the IIDS scanner on the KPNO 4 m telescope. A preliminary analysis using K-line equivalents widths shows an order of magnitude range in metal abundance: from +0.5 to -0.5 with respect to [Fe/H] of the giants in M92. The giants of Zinn’s B branch are more metal-poor than those on his A branch but the difference is larger than he deduced.

Keywords

Helium Spectrophotometry Zinn

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